A heavy body slides on a smooth, inclined surface. Determine the speed of the body

A heavy body slides on a smooth, inclined surface. Determine the speed of the body in the lower position. Take V0 = 0; g = 10m / s “; h = 2.45m.

To determine the value of the velocity of a heavy body in the lower position, we use the equality (we assume that the heavy body slid without friction): Ek = Ep and m * V ^ 2/2 = m * g * h, whence V = √ (g * h * 2 ).

Constants and variables: g – gravitational acceleration (g ≈ 10 m / s2); h is the initial height of the heavy body (h = 2.45 m).

Calculation: V = √ (g * h * 2) = √ (10 * 2.45 * 2) = 7 m / s.

Answer: The heavy body has reached a speed of 7 m / s in the lower position.