Question

Classify the following into Contact forces and Non-contact forces. 06 A rolling ball comes to rest, bring the unlike poles of the magnets in contact, pen slips off your hand, Lift a bucket of water, bring a straw rubbed with paper near the straw which is not rubbed with paper, carrying a load in bullock cart.
PLEASE GIVE CURRET ANSWER​

Answer 1

Answer:

(a) Non contact forces

(b) Contact forces

(c) Non Contact Forces

(d) Contact forces

(e) don't know

(f) Contact forces

Answer 2

We can classify the given forces into contact and non-contact forces as follows:

• A rolling ball comes to rest after some time due to friction, which is due to the interaction of surfaces in contact. So, it is a contact force.
• The unlike poles of the magnets attract each other due to magnetic force which is a non-contact force.
• Pen slips off our hand due to the pull of gravity which is a non-contact force.
• We lift a bucket using the friction of our palm as well as our muscular force. So it is a contact force.
• Rubbed straws attract the straws not rubbed by electrostatic force, which is a non-contact force.
• Bullocks carry load using the frictional force between their legs and the ground, which is a contact force.