(A) Zero
(B) Positive
(C) Negative
(D) None of the above
Author:
If the mass of body is 5 kg raised of 1 m. Then work done is?
(A) 0.49 J
(B) 4.9 J
(C) 49 J
(D) 490 J
If 50kg gate is pushed through 2m across the floor with a force of 50 N. The work done will be?
(A) 100 J
(B) 150 J
(C) 200 J
(D) 245 J
If the direction of force is perpendicular to the direction of motion of body then work done is?
(A) Zero
(B) Infinity
(C) Minimum
(D) Maximum
When the force is parallel to the direction of body the work done is?
(A) Varies
(B) Infinity
(C) Minimum
(D) Maximum
The SI unit of work is?
(A) Watt
(B) Newton
(C) Newton second
(D) Joule
the value of the escape velocity for earth is approximately equal to?
(A) 11 m/s
(B) 11 km/h
(C) 11 km/min
(D) 11 km/s
The escape velocity for the earth depends upon?
(A) The radius of the earth
(B) The mass of the body
(C) Mass of the earth
(D) Both A & C