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Hard spring.
W = FS cos 90º = 0.
K.E. = p²/2ₘ when p is doubled K.E. becomes 4 times. % Increase in K.E. = ∆K.E/ K.E X 100 = 4K.E - K.E / K.E x100 = 3 × 100 = 300%.
K.E. = p²/2ₘ when p is doubled K.E. becomes 4 times. % Increase in K.E. = ∆K.E/ K.E X 100 = 4K.E – K.E / K.E x100 = 3 × 100 = 300%.
Conservative force : e.g., Gravitational force, electrostatic force. Non-Conservative force : e.g., forces of friction, viscosity.
Which spring has greater value of spring constant – a hard spring or a delicate spring?
Hard spring.
Hard spring.
See lessA body is moving along a circular path. How much work is done by the centripetal force?
W = FS cos 90º = 0.
W = FS cos 90º = 0.
See lessThe momentum of the body is doubled, what % does its K.E change?
K.E. = p²/2ₘ when p is doubled K.E. becomes 4 times. % Increase in K.E. = ∆K.E/ K.E X 100 = 4K.E - K.E / K.E x100 = 3 × 100 = 300%.
K.E. = p²/2ₘ when p is doubled K.E. becomes 4 times.
See less% Increase in K.E. = ∆K.E/ K.E X 100 = 4K.E – K.E / K.E x100
= 3 × 100 = 300%.
Define the conservative and non-conservative forces. Give examples of each.
Conservative force : e.g., Gravitational force, electrostatic force. Non-Conservative force : e.g., forces of friction, viscosity.
Conservative force : e.g., Gravitational force, electrostatic force.
See lessNon-Conservative force : e.g., forces of friction, viscosity.