Grade 11Mechanics

Particle is projected along a rough horizontal table , its path must be :
(assumed only gravity and contact force due to the table acting )

straight line

Circular

Parabolic

Elliptical. Please explain the answer .

Dishari Das

7 Years agoGrade 11

1 Answer

Kapil Khare

7 Years ago

Its path must be straight line.

The forces acting on the particles are friction and normal forces from the table and gravitational force from the earth.

The normal force of the table is cancelling the gravitational force of the earth.

Frictional force is acting in the direction opposite to the direction of velocity. So, acceleration due to force is also in the direction opposite to that of velocity.

Since, direction of velocity and acceleration is in same line, thus, the displacement of the body will be in straight line.

Thus, the path must be straight line.

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Particle is projected along a rough horizontal table , its path must be : (assumed only gravity and contact force due to the table acting ) straight line Circular Parabolic Elliptical. Please explain the answer .

Dishari Das

1 Answer

Kapil Khare

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Particle is projected along a rough horizontal table , its path must be :
(assumed only gravity and contact force due to the table acting )

straight line

Circular

Parabolic

Elliptical. Please explain the answer .

A car loaded with water having total mass 1000 kg moves on a straight horizontal Road starting from rest under the action of a force of 100 Newton. The water spills throw a small hole in the bottom at a rate of 0.1 KG per second the velocity of cart after 300 seconds is nearly.

11
21
31
41