A marine engine delivers a torque of 200 lb-ft to a gearbox

Question

Repeat Problem 2.27 where the marine engine delivers a torque of 400 lb-ft.

Problem 2.27

A marine engine delivers a torque of 200 lb-ft to a gearbox shown in Figure P2.27 which provides a reverse ratio of -4 :1. What torque is required to hold the gearbox in place?