Answer :
The velocity of the 50-kg block a when it has risen 5m starting from rest is 9m/s. The velocity of the 50-kg block, a, when it has risen 5m starting from rest can be determined using the formula for work, W=F×d
The velocity of the 50-kg block, a, when it has risen 5m starting from rest can be determined using the formula for work, W=F×d, which states that the work done by a force, F, is equal to the product of the force and the distance that the force moves an object, d. In this case, W=165N*5m=825J. The formula for kinetic energy, [tex]KE=1/2*m*v^2[/tex], can then be used to solve for the velocity, v, of the block. Here, m is the mass of the block and v is the velocity. Substituting the values, we get: [tex]KE=1/2*50kg*v^2[/tex]=825J. Solving for v, we get: v=sqrt(825/50)=9m/s. Therefore, the velocity of the 50-kg block a when it has risen 5m starting from rest is 9m/s.
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