How much work did the movers do (horizontally) pushing a 160-kg crate 10.3 m across a rough floor without acceleration, if the effective coefficient of friction was 0.50?

The work done is 8075.2 J.

Explanation:

Given that,

Mass of crate = 160 kg

Distance = 10.3 m

coefficient of friction = 0.50

We need to calculate the normal force

Using balance equation

Here, acceleration a = 0

Put the value into the formula

We need to calculate the frictional force

Using balance equation

We need to calculate the work done

Using formula of work done

Hence, The work done is 8075.2 J.

i think it because equal matrices have equal dimensions, only square matrices can be symmetric. for all indices and . every square diagonal matrix is symmetric, since all off-diagonal elements are zero. in linear algebra, a real symmetric matrix represents a self-adjoint operator over a real inner product space.

explanation:

newton's third law, for every action there is an equal and opposite reaction.