Questions
Statement I: Pulling a lawn roller is easier than pushing it.
Statement II: Pushing increases the apparent weight and hence the force of friction.
detailed solution
Correct option is A
Suppose the roller is pushed as in figure (b). The force F is resolved into two components, horizontal component FH which helps the roller to move forward, and the vertical component acting downwards adds to the weight. Thus weight is increased. But in the case of pull [fig (a)] the vertical component is opposite to its weight. Thus weight is reduced. So pulling is easier than pushing the lawn roller.Talk to our academic expert!
Similar Questions
A block of mass 1 kg is at rest on a horizontal table. The coefficient of static friction between the block and the table is 0.5. The magnitude of the force acting upwards at an angle of 60° from the horizontal that will just start the block moving is
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