Two Masses Are Connected by a String Which Passes Over

question 122

Multiple Choice

Two masses are connected by a string which passes over a pulley with negligible mass and friction. One mass hangs vertically and one mass slides on a 30.0 degree frictionless incline. The vertically hanging mass is 6.00 kg and the mass on the incline is 4.00 kg. The magnitude of the acceleration of the 4.00 kg mass is

• A) 1.98 m/s².
• B) 3.92 m/s².
• C) 5.75 m/s².
• D) 6.86 m/s².
• E) 7.84 m/s².

---

Definitions:

Marginal Revenue

is the additional revenue that a firm receives from selling one more unit of a good or service.

Nondiscriminating Pure Monopolist

A monopolist that charges all consumers the same price for its product, regardless of the differences in their willingness to pay.

Marginal Revenue Curves

A graphical representation showing how an additional unit sold affects total revenue, typically sloping downwards for firms with market power.

Nondiscriminating Monopolist

A monopolist who charges the same price for their product to all consumers, rather than adjusting the price based on market segmentation or consumer willingness to pay.