State whether the following statement is true or false:
The force of friction is smaller in solids than in liquids.
The force of friction is smaller in solids than in liquids.
(FALSE) The statement is False.
Friction is the resistance to motion between two surfaces in contact. In general,the force of friction (specifically fluid friction or drag) is significantly lower in liquids compared to the friction between two solid surfaces. Solids have higher intermolecular forces and surface irregularities that create greater resistance to motion compared to the flow characteristics of liquids.
Friction is the resistance to motion between two surfaces in contact. In general,the force of friction (specifically fluid friction or drag) is significantly lower in liquids compared to the friction between two solid surfaces. Solids have higher intermolecular forces and surface irregularities that create greater resistance to motion compared to the flow characteristics of liquids.
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$(i)$ Name the property of bodies to resist a change in their velocity.
$(ii)$ What is the relationship between force and acceleration?
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$(iv)$ Which physical quantity corresponds to the rate of change of momentum?
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View Solution$A$ bullet of mass $5 \, g$ travelling at a speed of $120 \, m s^{-1}$ penetrates deeply into a fixed target and is brought to rest in $0.01 \, s$. Calculate: $(a)$ the distance of penetration in the target,$(b)$ the average force exerted on the bullet.
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View Solution$(a)$ State the law of conservation of momentum.
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View Solution$(a)$ When a motorcar makes a sharp turn at a high speed,we tend to get thrown to one side. Why?
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Medium
View Solution$(a)$ State Newton's second law of motion. Use this law to find a method to measure force acting on an object.
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