Laws of Motion (NEET Physics): Questions 54 - 58 of 114

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Question number: 54

» Laws of Motion » Force and Inertia

MCQ▾

Question

What is the tension in a rod of length L and mass M at a distance y from F, when the rod is acted on by two unequal forces F1 and F2 (

Tension in a rod of length L and mass M

Tension in a Rod of Length L and Mass M

Rod is acted on by two unequal forces F1 and F2

Choices

Choice (4) Response

a.

MLY(F1F2M)

b.

F1(1+YL)+F2(YL)

c.

MLY(F1+F2M)

d.

F1(1YL)+F2(YL)

Question number: 55

» 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.

13.33 N

b.

36.67 N

c.

11.67 N

d.

All of the above

Question number: 56

» Laws of Motion » Laws of Friction

MCQ▾

Question

The contact force exerted by a body A on another body B is equal to the normal force between the bodies. We conclude that -

(1) The surfaces must be smooth

(2) Force of friction between two bodies may be equal to zero

(3) Magnitude of normal reaction is equal to that of friction

(4) Bodies may be rough

Which of the following options are correct?

Choices

Choice (4) Response

a.

1 and 4

b.

2 and 4

c.

1 and 2

d.

3 and 4

Question number: 57

» Laws of Motion » Force and Inertia

MCQ▾

Question

In above question, what is the tension in each string?

Choices

Choice (4) Response

a.

13mg

b.

43mg

c.

53mg

d.

23mg

Question number: 58

» Laws of Motion » Laws of Friction

MCQ▾

Question

A body of mass 400 g slides on a rough horizontal surface. If the frictional force is 3.0 N, the angle made by the contact force on the body with the vertical will be

Choices

Choice (4) Response

a.

27°

b.

37°

c.

63°

d.

53°

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