Question

A solid Sphere of mass 50gm and diameter 2cm rolls without sliding with uniform velocity of 5m/sec along a straight line on a smooth horizontal table its total energy is

Answer 1

Answer:

K.E = 1/2 mv²

K.E = 1/2 × (50 × 5²)

= 1/2 × 50 × 25

= 25 × 25

= 50J.......(1)

P.E = mgh

P.E = 50 × 9.8 × h

= 490h J......(2)

Total Energy : K.E + P.E

50 + 490h

= 540h J

Note: (H is height from the table.

I am unable to find "h" if u multiply than u will get the answer)