This 90 kg anvil is about to fall from a 0.9 m high bench. What is its PE? Use g = 9.8 m/s2 for the acceleration due to gravity.

Option D. 793.8 J

Explanation:

From the question given above, the following data were obtained:

Mass (m) of object = 90 Kg

Height (h) = 0.9 m

Acceleration due to gravity (g) = 9.8 m/s²

Potential energy (PE) =...?

Potential energy is simply defined as the energy possessed by an object by reason of its position. Mathematically, it can be expressed as:

PE = mgh

Where:

'PE' is the potential energy.

'm' is the mass of object.

'g' is the acceleration due to gravity.

'h' is the height to which the object is located.

With the above formula, we can obtain the potential energy, PE as follow:

Mass (m) of object = 90 Kg

Height (h) = 0.9 m

Acceleration due to gravity (g) = 9.8 m/s²

Potential energy (PE) =...?

PE = mgh

PE = 90 × 9.8 × 0.9

PE = 793.8 J

Therefore, the potential energy of the object is 793.8 J

you get 2.3=1.21*\frac{a}2 or 4.6=1.21a or a=3.802 (b)

explanation: