Equilibrium of a Rigid Body

A resistance of $2000 \mathrm{N}$ is overcome by a machine of velocity ratio $5$ and efficiency $75\%$. Find the effort in newtons.

A resistance of $2000 \mathrm{N}$ is overcome by a machine of velocity ratio $5$ and efficiency $75\%$. Find M.A.?

Length of second order lever is $1 \mathrm{m}$ and load of $10 \mathrm{kgf}$ acting $60 \mathrm{cm}$ from the fulcrum is raised. What is the $\mathrm{M}.\mathrm{A}$?

Length of second order lever is $1 \mathrm{m}$ and load of $10 \mathrm{kgf}$ acting $60 \mathrm{cm}$ from the fulcrum is raised. What effort is needed in $\mathrm{kgf}$?

In a movable pulley (single moving pulley), the load is $100 \mathrm{N}$. Find the effort in newtons, if the efficiency is $100$ percentage.

In a movable pulley (single moving pulley), the load is $100 \mathrm{N}$. Find the mechanical advantage, if the efficiency is $100$ percentage.

Which lever has mechanical advantage always greater than one?

The principle of a lever is the principle of law of:

A system is said to be in static equilibrium when, net force acting on the body is zero, net _____ acting the block is zero and velocity of the block is also zero.

If three coplanar forces keep a body in equilibrium, then they are always concurrent.

Centre of mass and centre of gravity always coincide.

Centre of mass and centre of gravity do not coincide in a

The position of centre of gravity of a body remains unchanged even when the body is deformed.

_____ is in the middle of the lever of second class.

The mechanical advantage of a lever of third order is always less than _____.

The knife is a lever of the first type.

The position of centre of gravity of a body remains unchanged even when the body is deformed.

Class III lever acts as a _____ multiplier.

(Choose from the following: force / speed)

The handle of a nut-cracker is $16 \mathrm{cm}$ long and a nut is placed $2 \mathrm{cm}$ from its hinge. If a force of $4 \mathrm{kgf}$ is applied at the end of handle to crack it, what weight (in $\mathrm{kgf}$), if simply, placed on the nut will crack it?

A resistance of $2000 \mathrm{N}$ is overcome by a machine of velocity ratio $5$ and efficiency $75\%$. If the effort required to overcome resistance is $x$ $\mathrm{N}$, then the value of $x$ is?  (Give your answer up to two decimal places)