When using a pencil eraser, you exert a vertical force of 6.00 N at a distance of 2.00 cm from the hardwood-eraser joint. The pencil is 6.00 mm in diameter and is held at an angle of 20.0° to the horizontal. (a) By how much does the wood flex perpendicular to its length? (b) How much is it compressed lengthwise? This question is from our text, OpenStax University Physics: Volume 1

A woman is standing erect and with her elbow flexed 90°. She has an 80 N load in her hand and it has a 0.25 m lever arm to the elbow. Her biceps creates 800 N of force and it has a 0.02 m lever arm to the elbow. The type of contraction in the biceps is:   Group of answer choices concentric isometric really big eccentric

Many caterpillars construct cocoons from silk, one of the strongest naturally occurring materials known. Each thread is typically 2.0 µm in diameter, and the silk has a Young's modulus of 4.0 x 10° N/m2. Assuming that there is no appreciable space between the parallel strands, how many strands N would be needed to N = strands make a rope 8.6 m long that would stretch only 1.02 cm when supporting a pair of 85-kg mountain climbers? Again assuming that there is no appreciable space between the parallel strands, what would be the diameter d of the rope? d = cm

A 3.30 m -tall, 40.0 cm -diameter concrete column supports a 5.00×10^5 kg load. By how much is the column compressed? Express your answer with the appropriate units.   solve correctly. I will rate accordingly.

After a fall, a 74 kg rock climber finds himself dangling from the end of a rope that had been 15 m long and 9.8 mm in diameter but has stretched by 2.4 cm. For the rope, calculate (a) the strain, (b) the stress, and (c) the Young's modulus. (a) Number Units (b) Number i Units (c) Number Units

Suppose that we have two hanging rods of the same length 2.8 m. However, their cross sections are a circle with radius 3.5 mm and a square with sides ( 2•3.5 ) mm. Both rods have the same Young’s Modulus of 1.5 × 1011 N/m2. a) If we attach a heavy ball of mass 24 kg at the end of the first rod (the one with the circular cross section), how much would it stretch in millimeters?  b) If we attach the same ball of mass 24 kg at the end of the second rod (the one with the square cross section), how much would it stretch in millimeters?

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A 5.00 m -tall, 60.0 cm -diameter concrete column supports a 3.00×105 kg load. By how much is the column compressed?

The normal force of the ground on the foot can reach three times a runner's body weight when the foot strikes the pavement.  By what amount does the 52-cm-long femur of an 75 kg runner compress at this moment? The cross-section area of the bone of the femur can be taken as 5.2×10−4m2 and its Young'’s modulus is 1.6×1010N/m2. Express your answer to two significant figures and include the appropriate units.