MDCAT Physics Chapter 2 online mcq test with answers for chapter 2 (Work and Energy)

Question # 1

A rigid uniform bar of length 2.4 m is pivoted horizontally at its mid-point, weights are hung from two points of the bar as shown in diagram. To maintain horizontal equilibrium, a couple is applied to the bar: What is the torque and the direction of couple?

40 N m clockwise A
40 N m anti-clockwise B
80 N m clockwise C
80 N m anti-clockwise D

Question # 2

Two bodies are projected at angles  and (90°–) with the horizontal at the same speed.The ratio of their maximum heights is

1 : 1 A
1 : tan  B
1 : tan  C
tan² : 1 D

Question # 3

Two bodies are projected at angle 𝜽 𝒂𝒏𝒅 (𝟗𝟎 − 𝜽) to the horizontal with the same speed. The ratio of their times of flight is:

sin 𝜃 : 1 A
cos 𝜃 : 1 B
sin 𝜃 : cos𝜃 C
cos 𝜃 : sin𝜃 D

Question # 4

If the range of a projectile is R, the potential energy will be maximum after the projectile has covered (from start) distance equal to:

R/2 A
R/4 B
R C
R/9 D

Question # 5

The distance covered by a body in time ‘t’ starting from rest is:

1/2 𝑡² A
vt B
𝑎𝑡² C
𝑎𝑡₂ D

Question # 6

A body is in translational equilibrium if

P = 0 A
L = 0 B
F = 0 C
 = 0 D

Question # 7

Two astronauts in a satellite must have

Same masses A
Same real weights B
Same apparent weights C
None of these D

Question # 8

At the highest point on the trajectory of a projectile, its

Potential energy is minimum A
Kinetic energy is maximum B
Total energy is maximum C
Kinetic energy is minimum D

Question # 9

Newton’s third law concerns the forces of interaction between two bodies. Which of the following statement relating to the third law is not correct:

The two forces must be the same type A
The two forces must act on different bodies B
The two forces are always opposite in direction C
The two forces are equal and opposite so the bodies are in equilibrium D

Question # 10

A body of mass m having an initial velocity v, makes head on elastic collision with a stationary body of mass m. After the collision, the body of mass m comes to rest and only the body having mass M moves. This will happen only when:

m>>M A
m<<M B
) m=M C
m=1M D

Question # 11

A rider uses Motorcycle safety helmet that extends the time of collision during accident hence decreasing the

Change of collisio A
Force acting B
Velocity C
Impulse D

Question # 12

A man has weight 980 N in a stationary lift. What will be his weight if the lift starts moving up with anacceleration of 4.9 ms^-2

980 N A
1470 N B
1980 N C
1460 N D

Question # 13

A machine gun fires ‘n’ bullets per second and the mass of each bullet is m. If v is the speed of each bullet then the force exerted on the machine gun is:

mng A
mnv B
mnvg C
mnv/g D

Question # 14

Two projectiles ‘A’ and ‘B’ are thrown with same speed but at angle of 40 degree and 50 degree with the horizontal. The horizontal range of ‘A’ will be:

Equal to that of ‘B’ A
Greater than that of ‘B’ B
Less than that of ‘B’ C
4/5times that of ‘B’ D

Question # 15

A particle executing one dimensional motion, finally comes to rest, what will be the angle between acceleration and displacement during motion:

0 A
π B
𝜋/2
C
𝜋/4
D

Question # 16

In the absence of air resistance, a stone is thrown from P and follows a parabolic path in which the highest point reached is T. The vertical component of acceleration of stone is:

Zero at T A
Greatest at T B
) Greatest at P C
the same at P as at T D

Question # 17

select Which one of the following is not performing projectile motion

A gas filled balloon A
) Bullet fired from gun B
A football kicked C
A baseball shot D

Question # 18

Two 8 N forces act on each end of the beam of length 0.60m. Two forces are parallel and acting opposite to each other, the angle between the force and beam is 60o , what is the torque of the couple exerted on the beam:

2.4 Nm A
4.2 Nm B
4.8 Nm C
9.6 Nm D

Question # 19

Two railway trucks of masses m and 3m move towards each other in opposite directions with speeds 2v and v respectively. These trucks collide and stick together. What is the speed of the trucks after the collision?

v/4 A
v/2 B
v C
5v/4 D

Question # 20

As in linear motion force determines linear acceleration where as in circular motion torque determines its

Angular acceleration A
Linear acceleration B
Vibratory acceleration C
Tangential acceleration D

Sr.#	Question	Answer
1	A rider uses Motorcycle safety helmet that extends the time of collision during accident hence decreasing the	A. Change of collisio B. Force acting C. Velocity D. Impulse
2	Two bodies are projected at angle 𝜽 𝒂𝒏𝒅 (𝟗𝟎 − 𝜽) to the horizontal with the same speed. The ratio of their times of flight is:	A. sin 𝜃 : 1 B. cos 𝜃 : 1 C. sin 𝜃 : cos𝜃 D. cos 𝜃 : sin𝜃
3	In a one-dimensional elastic collision, the relative velocity of approach before collision is equal to:	A. Sum of the velocities of the bodies B. e times the relative velocity of separation after collision C. 1⁄𝑒 times the relative velocity of separation after collision D. relative velocity of separation after collision
4	As in linear motion force determines linear acceleration where as in circular motion torque determines its	A. Angular acceleration B. Linear acceleration C. Vibratory acceleration D. Tangential acceleration
5	A body of mass m having an initial velocity v, makes head on elastic collision with a stationary body of mass m. After the collision, the body of mass m comes to rest and only the body having mass M moves. This will happen only when:	A. m>>M B. m<<M C. ) m=M D. m=1M
6	A particle executing one dimensional motion, finally comes to rest, what will be the angle between acceleration and displacement during motion:	A. 0 B. π C. 𝜋/2 D. 𝜋/4
7	Vertical component of velocity of the projectile at any instant ‘t’ from the ground is given by:	A. 𝑣𝑖𝑐𝑜𝑠𝜃 B. 𝑣𝑖𝑐𝑜𝑠𝜃 − 𝑔t C. 𝑣𝑖𝑠𝑖𝑛𝜃 − 𝑔t D. 𝑣𝑖𝑠𝑖𝑛𝜃 + 𝑔t
8	The angular momentum of a body changes from 30 J-S to 50 J-S in 0.5 sec. The torque acting on it is	A. 40 N-m B. 100 N-m C. 50 N-m D. 150 N-m
9	What is the resultant force in the diagram shown?	A. Zero B. 6N to left C. 6N to right D. 11N to right
10	A machine gun fires ‘n’ bullets per second and the mass of each bullet is m. If v is the speed of each bullet then the force exerted on the machine gun is:	A. mng B. mnv C. mnvg D. mnv/g

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MDCAT Physics Chapter 2 MCQ Test With Answer for (Motion & Force)

MCQ's Test For MDCAT Physics Chapter 2 Motion & Force Online Test

MDCAT Physics Chapter 2 Motion & Force Online Test

A rigid uniform bar of length 2.4 m is pivoted horizontally at its mid-point, weights are hung from two points of the bar as shown in diagram. To maintain horizontal equilibrium, a couple is applied to the bar: What is the torque and the direction of couple?

Two bodies are projected at angles  and (90°–) with the horizontal at the same speed.The ratio of their maximum heights is

Two bodies are projected at angle 𝜽 𝒂𝒏𝒅 (𝟗𝟎 − 𝜽) to the horizontal with the same speed. The ratio of their times of flight is:

If the range of a projectile is R, the potential energy will be maximum after the projectile has covered (from start) distance equal to:

The distance covered by a body in time ‘t’ starting from rest is:

A body is in translational equilibrium if

Two astronauts in a satellite must have

At the highest point on the trajectory of a projectile, its

Newton’s third law concerns the forces of interaction between two bodies. Which of the following statement relating to the third law is not correct:

A body of mass m having an initial velocity v, makes head on elastic collision with a stationary body of mass m. After the collision, the body of mass m comes to rest and only the body having mass M moves. This will happen only when:

A rider uses Motorcycle safety helmet that extends the time of collision during accident hence decreasing the

A man has weight 980 N in a stationary lift. What will be his weight if the lift starts moving up with anacceleration of 4.9 ms-2

A machine gun fires ‘n’ bullets per second and the mass of each bullet is m. If v is the speed of each bullet then the force exerted on the machine gun is:

Two projectiles ‘A’ and ‘B’ are thrown with same speed but at angle of 40 degree and 50 degree with the horizontal. The horizontal range of ‘A’ will be:

A particle executing one dimensional motion, finally comes to rest, what will be the angle between acceleration and displacement during motion:

In the absence of air resistance, a stone is thrown from P and follows a parabolic path in which the highest point reached is T. The vertical component of acceleration of stone is:

select Which one of the following is not performing projectile motion

Two 8 N forces act on each end of the beam of length 0.60m. Two forces are parallel and acting opposite to each other, the angle between the force and beam is 60o , what is the torque of the couple exerted on the beam:

Two railway trucks of masses m and 3m move towards each other in opposite directions with speeds 2v and v respectively. These trucks collide and stick together. What is the speed of the trucks after the collision?

As in linear motion force determines linear acceleration where as in circular motion torque determines its

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A man has weight 980 N in a stationary lift. What will be his weight if the lift starts moving up with anacceleration of 4.9 ms^-2