At one position during its cycle, the foot pushes straight down with a 430-N force on a bicycle pedal arm that is rotated an angle ϕ=55∘ from the vertical, as shown in (Figure 1). Figure1 of 1

Part A
If the force is applied r=0.18m from the axis of rotation, what magnitude of torque is produced?

Asmall electric heater, immersed in 80g of water in a calorimeter of 40j/k raises the temperature from 10.5 degree celsius to 25 degree celsius in 12 minutes. using the same apparatus with 50g of oil instead of water, it is found that the temperature of oil rises from 7 degree celsius to 27 degree celsius in 10 minutes. find specific heat capacity of the oil.