# Laws of Motion-Force and Inertia (NEET Physics): Questions 45 - 48 of 56

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## Question number: 45

» Laws of Motion » Force and Inertia

Assertion-Reason▾

### Assertion (Ꭺ)

In the given figure,

### Reason (Ꭱ)

In the given figure,

### Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

b.

Both Ꭺ and Ꭱ are false

c.

Ꭺ is true but Ꭱ is false

d.

Ꭺ is false but Ꭱ is true

## 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°)

### 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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