Physics Problems With Solutions Mechanics For Olympiads And Contests Link 〈Desktop〉

Using the equation: ΔU = mgh ΔU = 5(10)(10) = 500 J

Using the equation: f = μN 4 = μ(2)(10) μ = 0.2 Using the equation: ΔU = mgh ΔU =

Using the conservation of momentum: m₁v₁ + m₂v₂ = m₁v'₁ + m₂v'₂ 2(5) + 0 = 2v'₁ + 3v'₂ Using the equation: ΔU = mgh ΔU =

Using the kinematic equation: v = u + at v = 10 + 2(5) = 20 m/s Using the equation: ΔU = mgh ΔU =

A block of mass 2 kg is placed on a horizontal surface. A force of 10 N is applied to the block, causing it to accelerate at 3 m/s². Find the coefficient of friction.