# Laws of Motion-Force and Inertia (NEET Physics): Questions 55 - 57 of 57

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## Question number: 55

» Laws of Motion » Force and Inertia

Assertion-Reason▾

### Assertion (Ꭺ)

Block A is moving on horizontal surface towards right under the action of force F. All surfaces are smooth. At the instant shown the force exerted by block A on block B is equal to net force on block B.

### Reason (Ꭱ)

From Newton’s third law of motion, the force exerted by block A on B is equal in magnitude to force exerted by block B on A.

### Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are false

b.

Ꭺ is true but Ꭱ is false

c.

Ꭺ is false but Ꭱ is true

d.

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

## Question number: 56

» Laws of Motion » Force and Inertia

MCQ▾

### Question

A rope of length 15 m and linear density 2 kg/m is lying length wise on a horizontal smooth table. It is pulled by a force of 25 N. The tension in the rope at the point 7 m away from the point of application, will be –

### Choices

Choice (4) Response

a.

36.67 N

b.

13.33 N

c.

11.67 N

d.

All of the above

## Question number: 57

» Laws of Motion » Force and Inertia

MCQ▾

### Question

Two blocks and of masses and respectively are connected by a massless and inextensible string. The whole system is suspended by a massless spring as shown in figure. The magnitudes of acceleration of and immediately after the string is cut, are respectively,

### Choices

Choice (4) Response

a.

b.

c.

d.

f Page