As effective weight in the case of pulling is less than in the pushing, less force is required in pulling. Hence, it is easier to pull than to push. In case of pulling, effective weight of lawn mover = mg-f sin θ pushing, effective weight = mg+ f sin θ In pushing frictional force is greater than that of in case of pulling.
Why is it difficult to push a Lawn Roller?
Whereas, when a lawn roller is pushed, force is applied downwards and thereby, vertical component, directed downward, increase the weight of roller (effective weight) which creates difficulties in pushing the roller . Therefore, pushing of roller is difficult than pulling the same.
What is the difference between pushing and pulling a roller?
When you are pushing a roller you are Applying some force downwards and at some angle. That force can be resolved into a horizontal push and a vertically downward force that actually adds on to the weight of the roller. While when we pull a roller we are applying a pull upwards and at some angle.
How does a Lawn Roller work?
Sol: When a lawn roller is pulled, the force acts along the handle, which has two components. The upwardly directed vertical component reduced the weight (effective weight) of roller , however, horizontal component of the force helps to push forward the mover.
Why is it easier to pull a lawnmower than to push it?
When you pull, the vertical component of the force helps to lift the roller little up and so reduces the friction When you push,the vertical component of the force pushes the roller down and so increses the friction . Originally Answered: Why is it easier to pull a lawnmower than to push it? Think about what a lawnmower does.
Why is it easier to pull a lawn roller than to push it on a smooth horizontal surface?
In case of pulling, the pulling force is applied in the upward direction which reduces normal reaction force and hence reduces frictional force. So force opposing the motion is reduced, hence pulling is easier.
Why is it is easier to pull a lawn lower than to push it?
Since the effective weight of the lawn mower is lesser in the first case pulling the lawn mower is easier than pushing it.
Why is it easier to pull a lawn mower than to push it class 11?
In this case, the vertical component of the applied force acts in the direction of the weight of the mower. This increases the effective weight of the mower. Since the effective weight of the lawn mower is lesser in the first case, pulling the lawn mower is easier than pushing it.
Does pushing or pulling require less force physics?
In case of pushing, the component of pushing force increases the normal force and hence the friction on the body increases. So, more force is required to push the object.
Why is it easier to pull down the branch of a tree from its free end than from anywhere else?
Answer: Because of the torque force it is much easier. Explanation: When anyone pulls the branch from free end the center of gravity is transferred.
Which is more easier push or pull?
We notice that the effective weight of the object and, consequently, friction between the object and the ground in case of pulling are lower than those in case of pushing. So, it is easier to pull a heavy object than to push it on level ground.
Why is kinetic friction less than limiting friction?
Initially it requires more force to break the interlock between the irregularities of two surfaces. But once the block is in motion, it takes time to interlock between the irregularities of two surfaces. Also, the body gains the inertia of motion. So, the kinetic friction is less than the limiting friction.
What are the advantages of friction why pulling of a lawn roller is preferred than to pushing it?
In pushing frictional force is greater than that of in case of pulling. When you push you to add some normal of mg, so friction also increases but in case of pulling at the time you are pulling you decrease the normal so friction reduced and & it becomes easier.
Pulling decreases normal reaction
In pushing, you apply force in inclined downward direction. This effectively increases the normal reaction of the lawn roller. The increased normal reaction implies a larger frictional force against which you must work.
Block B rests on block A. Block A rests on a horizontal surface C which is frictionless. There is friction between A and B. If B is pulled to the right, then
A sledge of mass 25 kg is pulled across level ground with a horizontal force of 60 N. The constant force of friction is 20 N. What is the acceleration of the sledge?
Answer
The weight of the lawn roller always acts in downward direction whether it is being pulled or pushed.
New questions in Physics
an object fall from 2 meter heigh ly Weight of object is 2 Netwon then work done by weight of object is