Laws of Motion-Force and Inertia (NEET Physics): Questions 6 - 10 of 56

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Question number: 6

» Laws of Motion » Force and Inertia

MCQ▾

Question

A 5 kg balls is swing in a vertical circle at the end of a cord 1 m long. The maximum speed at which it can swing if the cord can sustain maximum tension of 150 N will be –

Choices

Choice (4) Response
a.

64 m/s

b.

36.5 m/s

c.

3.18 m/s

d.

101 m/s

Question number: 7

» Laws of Motion » Force and Inertia

MCQ▾

Question

The string of a pendulum is horizontal. The mass of the bob is m. Now the string is released. The tension in the string in the lowest position is –

Choices

Choice (4) Response
a.

1 mg

b.

2 mg

c.

3 mg

d.

4 mg

Question number: 8

» Laws of Motion » Force and Inertia

MCQ▾

Question

A stone of mass 1 kg tied to a light inextensible string of length L = 10/6 m is whirling in a circular path of radius L in a vertical plane. If the ratio of the maximum tension in the string to the minimum tension in the suing is 4 and if g is taken to be 10m/sec 2, the speed of the stone at the highest point of the circle is

Choices

Choice (4) Response
a.

62 m/sec

b.

20 m/sec

c.

7.07 m/sec

d.

103 m/sec

Question number: 9

» Laws of Motion » Force and Inertia

MCQ▾

Question

A swimmer can swim in still water at a rate 4 km/h. If he swims in a river flowing at 3 km/h and keeps his direction (w. r. t. water) perpendicular to the current. Find his velocity w. r. t. the ground.

Choices

Choice (4) Response
a.

3 km/hr

b.

7 km/hr

c.

5 km/hr

d.

4 km/hr

Question number: 10

» Laws of Motion » Force and Inertia

MCQ▾

Question

A cane filled with water is revolved in a vertical circle of diameter 2 m and the water does not fall down n maximum period of revolution must be –

Choices

Choice (4) Response
a.

14.15

b.

4.02

c.

1.45

d.

2.006

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