Laws of Motion-Force and Inertia (NEET (National Eligibility cum Medical Entrance Test) Physics): Questions 46 - 48 of 57

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Question number: 46

» Laws of Motion » Force and Inertia

MCQ▾

Question

A body of mass 60 kg is pulled by a rope of length 8 m on a surface by a force of 128N applied at the other end. The force that is acting on 60 kg mass, if the linear density of rope is 0.5 kg/m will be –

Choices

Choice (4) Response

a.

128 N

b.

116 N

c.

120 N

d.

92 N

Question number: 47

» Laws of Motion » Force and Inertia

MCQ▾

Question

A body of mass 50kg resting on a smooth inclined plane is connected by a massless inextensible string passing over a smooth pulley, at the top of the inclined plane have another mass of 40 kg as shown in the figure. The distance through which 50 kg mass fall in 4 sec will be - (The angle of the inclined plane is 30°)

Inclined plane with the mass resting on the plane

Inclined Plane With the Mass Resting on the Plane

Mass resting on inclined plane

Choices

Choice (4) Response

a.

1.304 m

b.

1.63m

c.

16.3m

d.

13.04 m

Question number: 48

» Laws of Motion » Force and Inertia

MCQ▾

Question

Choose the correct statements -

(1) For equilibrium of a body under the action of concurrent forces

(2) If the downward acceleration of the lift is a = g, then the body will experience weightlessness.

(3) If the downward acceleration of the body is a > g, then the body will rise up to the ceiling of lift

(4) If the downward acceleration of the lift is a > g, then the body will experience weightlessness.

Select the correct answers and mark it according to the following codes:

Choices

Choice (4) Response

a.

1 and 2 are correct

b.

1, 2 and 3 are correct

c.

2 and 4 are correct

d.

1 and 3 are correct

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