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241.

A block A is dropped down a smooth inclined plane, while another identical block B is released for free fall from the same height

A.	both will hit the ground simultaneously	B.	block A will have higher velocity than block B while hitting the ground
C.	block A will hit the ground earlier	D.	block B will hit the ground earlier.

242.

Williot-Mohr diagram is used to determine

A.	deflection in trusses	B.	slope of trusses
C.	deflection in beams	D.	slope of beams

243.

A 2 kg block is dropped from a height of 4 metre onto a spring of force constant k = 1960 N/m. The spring will be compressed through

A.	1 cm	B.	3 cm
C.	4.5 cm	D.	8 cm

244.

Which of the following statement is incorrect?

A.	A body can have energy without having momentum	B.	A body cannot have kinetic energy without having momentum
C.	A body in motion will always have kinetic energy more than the potential energy	D.	None of the above

245.

A boy and his dad put a rope around a tree and stand side by side. What force by the boy can resist a force of 800 N by the dad?

A.	166	B.	192
C.	231	D.	246

246.

The mass, in kg, of the earth if its radius is 6400 km, will be

A.	6 x 1022	B.	6 x 1023
C.	6 x 1024	D.	6 x 1025

247.

A satellite orbits the earth 200 km above the surface. What speed, in m/s, is necessary for a circular orbit? The radius of the earth is 6400 km and g = 9.2 m/s2

A.	7800	B.	7200
C.	6600	D.	6000

248.

According to Kepler's law of motion the square of the time period T of a planet around the sun is proportional to the

A.	cube of the mean distance of planet from sun	B.	square of the mean distance of planet from sun
C.	3/2 power of the mean distance	D.	mean distance

249.

Instantaneous centre for a rolling wheel on a straight track will be at

A.	A	B.	B
C.	C	D.	D

250.

Impulse can be obtained from

A.	velocity-time diagram	B.	force displacement diagram
C.	velocity-displacement diagram	D.	force-time diagram