# Mechanics

## Mechanics

﻿UNIVERSITI TUNKU ABDUL RAHMAN

Centre
Course
Year/ Trimester
Session
: Centre for Foundation Studies (CFS)
: Foundation in Science
: Year 1 / Trimester 1
: 201605
Unit Code
Unit Title
Lecturer
: FHSC1014
: Mechanics

Additional Tutorial 2: Vector and translational kinematics.

1. Find the x and y-components of: (a) a displacement of 200 km, at 30.0o. (b) a velocity of 40.0 km/h, at 120o; and (c) a force of 50.0 N at 330o. [(a) 173 km, 100 km, (b) -20.0 km/h, +34.6 km/h, (c) 43.3 N, -25.0 N]

2. Three forces are applied to an object, as indicated in the drawing. Force has a magnitude of 21.0 Newton (21.0 N) and is directed 30.0° to the left of the + y axis. Force has a magnitude of 15.0 N and points along the + x axis. What must be the magnitude and direction (specified by the angle  in the drawing) of the third force such that the vector sum of the three forces is 0 N? [18.7 N, 76o]

3. A 200 N block rests on a 30o inclined plane as shown in figure below. If the weight of the block acts vertically downward, what are...