A bicycle rider would like to compare the effective- ness of cantilever hand brakes [see figure part (a)] versus V brakes [figure part (b)]. (a) Calculate the braking force R, at the wheel rims for each of the bicycle brake systems shown. Assume that all forces act in the plane of the figure and that cable ten- sion T = 200 N. Also, what is the average compressive nor- mal stress o on the brake pad (A = 4 cm²)? (b) For each braking system, what is the stress in the brake cable (assume effective cross-sectional area of 1.077 mm² )? (HINT: Because of symmetry, you only need to use the right half of each figure in your analysis) B

Q: 21 A firefighter weighs 730 NL She owears shoes that each cover an atea of 309 am. (a) Wihat is tthe…

A: Weight of the person F=730 N Area covered by the single shoe A1=309cm2=0.0309 m2

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A: Write the expression for the strain and stress, respectively.

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A: Given: mass of the chandelier (m) = 60 kg Tension in the string BD = T1 Tension in the string CD =…

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A: Given: W1=110 NW2=62 N The free-body diagram is given below.

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A: Given,radius r= 2.5cmheight h=82cmforce F=3.2×104N

Q: W В 270 mm A 180 mm

A: to keep the weight W balanced we should make sure that the forces from all directions must be…

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A:

Q: THE UNIFORM 10KG LADDER AS SHOWN IN THE FIGURE REST AGAINST THE SMOOTH WALL AT B, AND THE END A REST…

A:

Q: 4.0 cm 20 N 30 N

A: Solution: Given: 1 m = 100 cm d = diameter of wheel = 4.0 cm F1 = force acting on wheel at highest…

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A: Given, For Figure 1 the free body diagram is as follows

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A: Step 1: first we have to draw the directional forces.( Break the components of force) Step 2:to get…

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A:

Mechanical Properties of Solids

There are three types of matter- solid, liquid and gas. Out of them, solids have a rigid shaped and size. The intermolecular forces of attractions in solids are greatest. Mechanical properties are the physical properties of a material which it shows, when it is provided with certain amount of force or load. These properties are to be kept in mind for various purposes. When a force is applied to an object, the object may or may not get deformed depending upon its elastic property. But every time the object develops a restoring force against the force applied. This is commonly known as stress. If the object changes its dimensions due to the force applied it develops strain ( which is the ratio of change in dimension to the original dimension).