Question

ifcosA=mcosBthen prove that cot(A+B/2)=m+1/m-1tan(B-A/2), Explain it
​

Answer 1

Step-by-step explanation:

Given -

Mass(m) = 15kg

Height(h) = 1.5m

Acceleration due to gravity(g) = 10m/s

To find -

Work done by jim.

Solution -

Here, the form of energy is potential energy, so we will take the formula of potential energy, to solve the above question.

Work done = Potential energy (PE)

Now,

Potential energy = mgh

where,

m = mass

g = acceleration due to gravity

h = Height

On substituting the values -

PE = mgh

\longmapsto⟼ PE = 15kg × 10m/s × 1.5m

\longmapsto⟼ PE = 225 J

\therefore∴ Work done by the Jim is 225 J

__________________________________________________