A home-owner pushes a lawn mower across a horizontal patch of grass with a constant speed by applying a force P. The arrows in the diagram correctly indicate the directions but not necessarily the magnitudes of the various forces on the lawn mower. Which of the following relations among the various force magnitudes, W, f, N, P is correct?

P > f and N > W

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

P < f and N = W

No worries! We‘ve got your back. Try BYJU‘S free classes today!

P > f and N < W

No worries! We‘ve got your back. Try BYJU‘S free classes today!

P = f and N > W

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A P > f and N > W
The lawn mower will move forward if the applied force by the man is greater than the friction force $f$ . i.e $P > f$ because horizontal component of applied force should be grater than frictional force.
. The grass will cut if $N > W$ because vertical component of applied force is also in the direction of $W$ .

Suggest Corrections

Similar questions

Q. A force

F

is applied on a lawn mower at an angle of

60^{\circ}

with the horizontal. If it moves through a distance

x

in horizontal direction, the work done by the force is:

A steering wheel of diameter 0.5 m is rotated anticlockwise by applying two forces each of magnitude 5 N. Draw a diagram to show the application of forces and calculate the moment of the forces applied.

Q. A block of mass

0.1 k g

is held against a wall by applying a horizontal force on

5 N

on it. If

μ_{s}

between the wall and the block is

0.5

the magnitude of the frictional force acting on the block is :

Q. If a force of

5 N

is applied on a block of mass

10 k g

and the block remains at rest. then the magnitude and the direction of friction is

In above 3 figures, the arrows indicate the direction of force, and magnitude of force is written above/below the arrows.

Which box is experiencing balanced force?

Join BYJU'S Learning Program