Two carts have a compressed spring between them and are initially at rest. One of the carts has total mass, including its conten
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Answer:
Explanation:
Given
Wavelength of light
Screen is away
Distance between two adjacent bright fringe is
When same experiment done in water, wavelength reduce to
So, the distance between the two adjacent bright fringe is
Keeping other factor same, distance becomes
Explanation:
Given that,
The slope of the ramp,
Mass of the box, m = 60 kg
(a) Distance covered by the truck up the slope, d = 300 m
Initially the truck moves with a constant velocity. We know that the net work done on the box is equal to 0 as per work energy theorem as :
u and v are the initial and the final velocity of the truck
(b) The work done on the box by the force of gravity is given by :
Here,
W = -24550.13 J
(c) What is the work done on the box by the normal force is equal to 0 as the angle between the force and the displacement is 90 degrees.
(d) The work done by friction is given by :
Hence, this is the required solution.