ICSE-VIII-Physics

04: Energy Class 8 Physics

with Solutions - page 3
Qstn# B-16 Prvs-QstnNext-Qstn
  • #16
    Give one example of a body that has potential energy, in each of the following : (a) due to its position at a height, (b) due to its elongated stretched state. (a) due to its position at a height, (b) due to its elongated stretched state.
    Ans : : (a) P.E. due to its position at a height: Water at a height has P.E. stored in it. Falling water from a height can be used to do work like turning a wheel, (b) P.E. due to its elongated stretched state: A stretched rubber band (elongated state) has potential energy. It does work in restoring itself to its original state. A pebble placed on the stretched rubber catapult is thrown away when it is released to restore its original state.
    (a) P.E. due to its position at a height: Water at a height has P.E. stored in it. Falling water from a height can be used to do work like turning a wheel, (b) P.E. due to its elongated stretched state: A stretched rubber band (elongated state) has potential energy. It does work in restoring itself to its original state. A pebble placed on the stretched rubber catapult is thrown away when it is released to restore its original state.
  • #16-a
    due to its position at a height,
    Ans : P.E. due to its position at a height: Water at a height has P.E. stored in it. Falling water from a height can be used to do work like turning a wheel,
  • #16-b
    due to its elongated stretched state.
    Ans : P.E. due to its elongated stretched state: A stretched rubber band (elongated state) has potential energy. It does work in restoring itself to its original state. A pebble placed on the stretched rubber catapult is thrown away when it is released to restore its original state.