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39 questions
21
Motion under Gravity
Moderate
+1.0
-0.25
The mass of a body on the Earth is 100 kg (acceleration due to gravity, gₑ = 10 m/s²). If acceleration due to gravity on the Moon is (g/6), then the mass of the body on the Moon is
22
Motion under Gravity
Moderate
+1.0
-0.25
Weightlessness is –
23
Motion under Gravity
Moderate
+1.0
-0.25
The Earth travels in its orbit at a speed of approx 4,400 km per hour. Why do we not feel this high speed?
24
Motion under Gravity
Moderate
+1.0
-0.25
If the gravitational force of the Earth suddenly disappears, which are of the following will be the correct consequence?
25
Motion under Gravity
Moderate
+1.0
-0.25
An artificial satellite orbiting around the Earth does not fall down. This is so because the attraction of Earth –
26
Motion under Gravity
Moderate
+1.0
-0.25
Satellite is kept moving in its orbit around the Earth; it is due to –
27
Motion under Gravity
Moderate
+1.0
-0.25
A Geosyncronous satellite continuously active in its orbit due to centripetal force which is obtained by–
28
Motion under Gravity
Moderate
+1.0
-0.25
The known forces of nature can be divided into four classes, viz, gravity, electromagnetism, weak nuclear force and strong nuclear force. With reference to them which one of the following statements is not correct?
29
Motion under Gravity
Moderate
+1.0
-0.25
If a person sitting in a lift then when will he feel that his weight gets increased?
30
Motion under Gravity
Moderate
+1.0
-0.25
The time period of a pendulum –