Gobezoch › Textbooks › Physics Grade 10

Physics Grade 10 Unit 3: Elasticity and Static Equilibrium of Rigid Body

national exam questions have come from this unit. It runs 32 pages; one careful study pass takes about 3.6 hours, and its difficulty is moderate among Physics units. Each section below lists the questions set from it, with the year, and opens the page that teaches it.

Read this unit
3.1 Elasticity and plasticity · read p. 61
3.2 Density and specific gravity · read p. 67
Not asked in a national paper yet.
3.3 Stress and Strain · read p. 67
  • 2018 E.C., Q5 – A weight of 1000 N suspended from an aluminum wire of length 2.5 m causes a $4.0\times10^{-3}$ tensile strain on the wire. What is the change in length of the aluminum wire?
  • 2011 E.C., Q20 – Which of the following statement is correct about elastic behavior of materials?
  • 2010 E.C., Q24 – The tick is beside D.]
  • 2007 E.C., Q19 – Which one of the following laws best describes the behaviour of elastic materials?
3.4 The Young Modulus · read p. 72
  • 2016 E.C., Q18 – A load of 4 kg is applied to the ends of a wire 5 m and cross sectional area 4 mm 2 to produce an extension of 0.40 mm. What is the Young's modulus of the wire?
  • 2012 E.C., Q3 – A material rod that is 4.00 m long and $0.5\text{cm}^2$ in cross-sectional area is found to stretch 0.20cm under a tension of 5000N. The Young's Modulus for this material is _______.
  • 2011 E.C., Q35 – A metal rod is measured to have a resistance R. If the same metal rod is stretched to reduce its radius by half without affecting its density, what is its new resistance?
  • 2009 E.C., Q13 – Which of the following refers to the definition of strain as a ratio?
  • 2006 E.C., Q20 – When a load of 500kg is hanging from a steel wire of length 3m and cross sectional area , the wire Y = 2 × 1011 stretches beyond its no load length. If the Youngᓼs modulus for the wire made of steel is Pa, what is the ch
3.5 Static equilibrium · read p. 77
Not asked in a national paper yet.
3.5.1 First condition of equilibrium · read p. 78
Not asked in a national paper yet.
3.5.2 Second condition of equilibrium · read p. 78
  • 2017 E.C., Q19 – Which one of the following statements is a necessary condition for an object to be in linear equilibrium?
  • 2016 E.C., Q23 – Which one of the following bodies is in linear equilibrium?
  • 2016 E.C., Q10 – Which one of the following statements correctly defines a couple? Couple is a pair of equal magnitude forces acting on a body
  • 2014 E.C., Q11 – An electric dipole consists of a negative charge —q placed at a point with 'x' and 'y' coordinates (—2, —2) and a positive charge +q at (2, 2). The dipole is placed in a uniform electric field directed 'E' in the positiv
  • 2013 E.C., Q33 – The necessary condition for an object to be in rotational equilibrium is
  • 2012 E.C., Q25 – Two masses of $m_1$ and $m_2$ are balanced on a horizontal stick of negligible mass pivoted at the center of mass of the system. If the distance from $m_1$ to the center of mass is $3.0\text{m}$ and the distance from the
  • 2012 E.C., Q2 – The fulcrum of a uniform 20 Kg seesaw that is 4.0 m long is located 2.5 m from one end. A 30Kg child sits on the long end. The weight of a person sitting at the other end in order To balance the seesaw is ________ .
  • 2012 E.C., Q1 – Equilibrium is the state of an object when
  • 2011 E.C., Q32 – Two like charges of value q are fixed at x= a and x= -a as shown in the diagram below. q 0 If a test charge is released at y = b, which path will it follow? [Figure: A coordinate system with the horizontal x-axis and ver
  • 2010 E.C., Q14 – Which of the following is a correct statement about the first condition of equilibrium?
  • 2010 E.C., Q23 – The tick is beside A.]
  • 2009 E.C., Q11 – Which of the following statements is correct about the first condition of equilibrium?
  • 2009 E.C., Q5 – Which of the following statements is not correct?
  • 2008 E.C., Q10 – No other distances or forces are marked on the drawing.]
  • 2008 E.C., Q4 – No numerical values are given.]
  • 2008 E.C., Q26 – Two bodies that are separately in thermal equilibrium with their body must be in thermal equilibrium with each other. This statement is statement of